410 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



This considerable series averages somewhat larger and paler than 

 specimens from southwestern and southern Siam. As a matter of 

 fact, the birds from Trang north to Bandon are somewhat intermediate 

 but on the whole are best placed with the southern form. 



The series from west Java examined has been inadequate, consisting 

 of only two males, so I am following Robinson and Kloss^^ in assign- 

 ing the Malay Peninsula birds to the west Javan form. The series 

 from Sumatra has been small but averages somewhat deeper in color 

 than the Trang series, though individual specimens in the latter 

 and two or more specimens from farther south match them and in 

 size the Sumatran birds agree with the southern race. 



The type of K. m. abbotti from Banka is a female, very dark above 

 and very red on the breast for this sex. The series of adults of this 

 sex in the series is surprisingly small and none matches it. However, 

 I have seen such specimens in the more northern form and believe this 

 is only a veiy old female of the Sumatran race. The type of i^. m. 

 mallopercna from Singliep Island is lighter colored. 



Seventeen males from Singapore north to Bandon measure: Wing, 

 93.5-105 (96.6); tail, 142.5-192 (170.5); culmen, 16-18 (17.2) mm. 

 Four males from Sumatra: Wing, 93-99 (95.7); tail, 160-184 (171.4); 

 culmen, 17-18 (17.4) mm. 



The range of this form would extend then from western Java to 

 Banka, Sumatra, the Malay States, and Peninsular Siam, north to 

 Bandon. Dr. Smith's series shows its distribution in Peninsular 

 Siam fairly well. 



TURDUS OBSCURUS OBSCURUS Gmelin 



T Urdus obscurus Gmelin, Systema naturae, vol. 1, pt. 2, p. 816, 1789 (Lake 

 Baical). 



One female, Doi Angka, 8,000 feet, December 5, 1928; one female, 

 Doi Nangka, April 26, 1931; one male, Pang Meton (Doi Nangka), 

 May 1, 1931. 



This bird breeds in Siberia from the Yenisei east to the Amur and 

 migrates south to southern China, Indo-China, Assam, Burma, and 

 Siam; south through Peninsular Siam to the Malay States, Borneo, 

 Sumatra, the Philippines, and as far south as the Pelew Islands to 

 winter. 



It seems to be more or less of a common winter resident in Siam 

 proper and Peninsular Siam. 



There are numerous records from the mainland. Robinson ®° 

 records it from Pulo Terutau. 



■» Journ. Nat. Hist. Roc. Siam, vol. 5, p. 314, 1924. 



•• Journ. Federated Malay States Mus., vol. 7, p. 180, 1917. 



